Preventing plagiarism

We should establish an effective checking system to prevent plagiarism of academic papers, says an article in People's Daily. The following is an excerpt:

The Internet offers great help for academic research but it is also an easy way to plagiarize someone's work.

A company that runs a database for academic research said it would be easy for professors to find out whether their students have been cheating if they use its database. But it hoped professors would not use the database for that purpose as it would affect sales.